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Shelley Adelson is the eldest daughter of billionaire casino magnate Sheldon Adelson and his first wife, Sandra Windeler, whom he married in 1970 and divorced in 1988, making her Miriam Adelson's stepdaughter and part of the blended Adelson family. Born in the United States, she grew up during her father's early business ventures, which later blossomed into the Las Vegas Sands empire. She has two siblings from this marriage: sister Sivan and brother Mitchell. Following the divorce, the relationship between Sheldon and his children from the first marriage was reportedly strained for many years, though some reconciliation occurred later in life. Shelley has maintained a low public profile, avoiding the spotlight that surrounded her father's high-profile second marriage to Miriam Adelson in 1991 and his political activities. Unlike her stepmother Miriam, who became a prominent philanthropist and political donor, Shelley has not been prominently involved in public-facing roles within the family business or philanthropy. Limited information is available about her personal life, but she is known to have pursued a private existence, possibly focusing on family and personal interests. There have been occasional mentions of family legal matters, such as settlements related to her brother Mitchell's substance abuse issues in the 2000s, but Shelley herself has largely stayed out of legal or media controversies. As an heir to part of the Adelson fortune following Sheldon's death in 2021, her net worth is estimated in the hundreds of millions, though she does not appear to hold executive positions in the family's casino operations.